Bright single photon source based on self-aligned quantum dot-cavity systems

被引：39
作者：
Maier, Sebastian [1 ,2 ]
Gold, Peter [1 ,2 ]
Forchel, Alfred [1 ,2 ]
Gregersen, Niels [3 ]
Mork, Jesper [3 ]
Hoefling, Sven [1 ,2 ]
Schneider, Christian [1 ,2 ]
Kamp, Martin [1 ,2 ]
机构：
[1] Univ Wurzburg, Phys Inst, D-97074 Wurzburg, Germany
[2] Univ Wurzburg, Wilhelm Conrad Rontgen Res Ctr Complex Mat Syst, D-97074 Wurzburg, Germany
[3] Tech Univ Denmark, Dept Photon Engn, DTU Foton, DK-2800 Lyngby, Denmark
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 07期
关键词：
EFFICIENCY; OPTICS;
D O I：
10.1364/OE.22.008136
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on a quasi-planar quantum-dot-based single-photon source that shows an unprecedented high extraction efficiency of 42% without complex photonic resonator geometries or post-growth nanofabrication. This very high efficiency originates from the coupling of the photons emitted by a quantum dot to a Gaussian shaped nanohill defect that naturally arises during epitaxial growth in a self-aligned manner. We investigate the morphology of these defects and characterize the photonic operation mechanism. Our results show that these naturally arising coupled quantum dot-defects provide a new avenue for efficient (up to 42% demonstrated) and pure (g(2)(0) value of 0.023) single-photon emission. (C) 2014 Optical Society of America
引用
收藏
页码：8136 / 8142
页数：7
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